package lesson04;

import javax.swing.*;
import java.awt.*;
import java.net.URL;

public class JButtonDemo02 extends JFrame{
   public  JButtonDemo02(){
    Container container=getContentPane();
//    //将一个图片变为图标
//    URL resource=JButtonDemo01.class.getResource("tx.jpg");
//    Icon icon=new ImageIcon(resource);

     //单选框
       JRadioButton radioButton1=new JRadioButton("JradioButton1");
       JRadioButton radioButton2=new JRadioButton("JradioButton2");
       JRadioButton radioButton3=new JRadioButton("JradioButton3");

       //由于单选框只能选一个，分组.三选一
       //如果没分组的话就能多选
       ButtonGroup group=new ButtonGroup();
       group.add(radioButton1);
       group.add(radioButton2);
       group.add(radioButton3);

       //容器add
       container.add(radioButton1,BorderLayout.WEST);
       container.add(radioButton2,BorderLayout.CENTER);
       container.add(radioButton3,BorderLayout.EAST);
       setVisible(true);
       setBounds(200,200,400,400);
       setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
   }
    public static void main(String[] args) {
        new JButtonDemo02();}
}
